avast! 'aswRdr.sys' Buffer Overflow Vulnerability

# SPDX-FileCopyrightText: 2009 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

CPE = "cpe:/a:avast:antivirus";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.900985");
  script_version("2025-03-05T05:38:52+0000");
  script_tag(name:"last_modification", value:"2025-03-05 05:38:52 +0000 (Wed, 05 Mar 2025)");
  script_tag(name:"creation_date", value:"2009-11-26 06:39:46 +0100 (Thu, 26 Nov 2009)");
  script_tag(name:"cvss_base", value:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_cve_id("CVE-2009-4049");
  script_name("avast! 'aswRdr.sys' Buffer Overflow Vulnerability");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_family("Buffer overflow");
  script_dependencies("gb_avast_av_detect_win.nasl");
  script_mandatory_keys("avast/antivirus/detected");

  script_xref(name:"URL", value:"https://www.securityfocus.com/archive/1/507891/100/0/threaded");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/37031");

  script_tag(name:"impact", value:"Successful exploitation could allow remote attackers to cause a Denial of
  Service or potentially gain escalated privileges.");

  script_tag(name:"affected", value:"avast! Home and Professional version 4.8.1356 and prior on Windows.");

  script_tag(name:"insight", value:"The vulnerability is due to an error in 'aswRdr.sys' when processing
  IOCTLs. This can be exploited to corrupt kernel memory via a specially crafted 0x80002024 IOCTL.");

  script_tag(name:"solution", value:"Upgrade to avast! Home and Professional version 4.8.1367 or later.");

  script_tag(name:"summary", value:"avast! AntiVirus is prone to a buffer overflow vulnerability.");

  script_tag(name:"qod_type", value:"executable_version");
  script_tag(name:"solution_type", value:"VendorFix");

  exit(0);
}

include( "host_details.inc" );
include( "version_func.inc" );

if( ! infos = get_app_version_and_location( cpe:CPE, exit_no_version:TRUE ) )
  exit( 0 );

version = infos["version"];
location = infos["location"];

if( version_is_less( version:version, test_version:"4.8.1367" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"4.8.1367", install_path:location );
  security_message(port: 0, data: report);
  exit( 0 );
}

exit( 99 );